ICDcodes.org
FY2027

O33 — Maternal care for disproportion

Not billable

Is O33 billable?

No — O33 is a non-billable header code. O33 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 40 billable codes beneath O33.

Billable codes under this header

O33 at a glance

CodeO33
DescriptionMaternal care for disproportion
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with O33 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • disproportion with obstructed labor (O65-O66)

Includes

Conditions classified to O33.

  • the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O33 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • supervision of normal pregnancy (Z34.-)

Use additional code — inherited from Chapter 15

Report an additional code alongside O33 to fully describe the condition. O33 is sequenced first.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O33, but a patient may have both at the same time. When documentation supports it, O33 and the excluded code may both be reported.

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

What codes fall under O33? (10)

How long has O33 existed?

O33 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with O33?

ICD-10-CM declares these codes mutually exclusive with O33 — exactly one of each pair can be correct for a given encounter.